thread I've not had chance to play with it yet, but I've just bought one of these
#Aliexpress £7.24 | M5Stack Official 2020 New Arrival ATOM Matrix ESP32 PICO Development Kit Arduino IMU Sensor Python

It's an esp32 with addressable rgb led square that's also a push button.

In other words, it's a programmable wifi doodad with a colour display that's also a button.
permalink This thing is awesome.
I'll have a go at some light pattern stuff.